The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 45
... reason why the routes shown in Figure 10 are the easiest is not hard to see : the rocket has to " take off " and " land " , if one can extend these phrases to cover such a case , in the directions in which the planets are already moving ...
... reason why the routes shown in Figure 10 are the easiest is not hard to see : the rocket has to " take off " and " land " , if one can extend these phrases to cover such a case , in the directions in which the planets are already moving ...
Pagina 47
... reasons for believing that , in time , we will be able to harness atomic energy for rocket propulsion . This would ... reason why there should not be . " Orbital refuelling " , as it has been christened , is the key to interplanetary ...
... reasons for believing that , in time , we will be able to harness atomic energy for rocket propulsion . This would ... reason why there should not be . " Orbital refuelling " , as it has been christened , is the key to interplanetary ...
Pagina 98
... reason are deprived of the use of these organs do not seem to suffer ill effects . They can also orientate them- selves correctly even under water , when there is no sensation of weight to give any assistance . This is because vision ...
... reason are deprived of the use of these organs do not seem to suffer ill effects . They can also orientate them- selves correctly even under water , when there is no sensation of weight to give any assistance . This is because vision ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
THE EARTH AND ITS NEIGHBOURS | 9 |
THE ROCKET | 17 |
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able acceleration actual already appear astronautics astronomers atmosphere atomic become body build carry certainly Chapter close completely consider considerable course deal developed difficult direction discovered discuss distance Earth effect energy escape exist exploration extremely fact fall field Figure fuel give given gravity greater heat human hundred idea imagine important impossible increase interesting interplanetary involved journey known landing least less light limit live look lunar Mars material matter means miles minutes Moon motors necessary never observed once orbit oxygen perhaps period planets Plate possible practical present pressure probably problem produce purely radio reach reason relatively remain rocket round satellite scientific seems seen ship shown simple Solar space spaceship speed stars stations structure surface telescope temperature thousand Universe velocity Venus weight whole